CN107850315B

CN107850315B - Cleaning of cooking chamber

Info

Publication number: CN107850315B
Application number: CN201680047047.0A
Authority: CN
Inventors: F.布谢贝洛米; C.卡多; N.沙比; S.弗莱施; O.霍夫曼
Original assignee: BSH Home Appliances Co Ltd
Current assignee: BSH Home Appliances Co Ltd
Priority date: 2015-08-11
Filing date: 2016-08-05
Publication date: 2020-01-21
Anticipated expiration: 2036-08-05
Also published as: EP3334976A1; CN107850315A; EP3334976B1; WO2017025450A1

Abstract

Cartridge holder (7) for a cooking appliance (1) having a cooking chamber (2) and a water connection (5) on the cooking chamber side, having a water spray element (8) with an upper water inlet connection (14) that can be connected to the water connection (5) and with a fastening region (12) for a cartridge (6) to be arranged in the cooking chamber (2), wherein the cartridge holder (7) additionally has a water distributor (9) with at least one radially extending water conducting channel (18-20) for water (W) flowing out of the water spray element (8). Method for cleaning a cooking chamber (2) of a cooking appliance (1), wherein a water inlet (14) of a water jet (8) is pressurized with water (W) and the water (W) is deflected by means of the water jet (8) onto a water distributor (9) mounted on the water jet (8) and the water (W) is directed onto at least one wall (2 a, 2b, 2 c) of the cooking chamber (2) by means of at least one laterally open water channel (18-20) present in the water distributor (9). The invention is particularly advantageously applicable to steam-treatment devices, such as a stand-alone steam-treatment cooking device or an oven with steam cooking function. The invention is particularly advantageously applicable to household cooking appliances.

Description

Cleaning of cooking chamber

The invention relates to a cartridge holder for a cooking device having a cooking chamber and a water connection on the side of the cooking chamber, wherein the cartridge holder has a water spray part with an upper water inlet connection that can be connected to the water connection and a fastening region for a cartridge arranged in the cooking chamber. The invention also relates to a method for cleaning a cooking chamber of a cooking appliance, wherein the water inlet connection of the water jet is pressurized with water and the water is deflected by means of the water jet. The invention is particularly advantageously applicable to steam-treatment devices, such as a stand-alone steam-treatment cooking device or an oven with steam cooking function. The invention is particularly advantageously applicable to household cooking appliances.

Cartridge holders of the type concerned have the disadvantage that they sometimes do not allow a sufficiently clean cooking chamber, for example in the case of removing food residues, oil films, scale and the like.

The object of the present invention is to overcome at least partially the disadvantages of the prior art and in particular to provide an improved possibility for cleaning a cooking chamber of a cooking appliance by means of a cartridge containing a cleaning agent.

This object is achieved according to the features of the independent claims. Preferred embodiments can be gathered, in particular, from the dependent claims.

This object is achieved by a cartridge holder for a cooking appliance having a cooking chamber and a water connection on the cooking chamber side, having a water spray part which has a water inlet connection, which can be connected to the water connection, on the upper side when connected to a top cover, and having a fastening region for a cartridge to be arranged in the cooking chamber, wherein the cartridge holder additionally has a water distributor with at least one radially extending water channel for water flowing out of the water spray part.

The cartridge holder has the advantage that it can be produced simply and with great tolerances by means of its at least two-part shape, can be used reliably even at low volumetric flows of the inflowing water, and forms a targeted jet of water flowing out of the water spray via the water channel and strikes the wall of the cooking chamber. The beam shaping achieves a locally higher kinetic energy of the impinging water, for example, and thus an improved cleaning there, while at the same time ensuring a general wetting of the walls of the cooking chamber, in particular over a longer duration of the cleaning process.

The water is guided through the water guide channel, in particular, to form a water jet which is directed onto the wall of the cooking chamber in order to achieve a particularly high mechanical cleaning effect.

It is an improvement that the at least one water channel is a channel open on its side. Such a water guide channel may also be referred to as a gutter. In particular, all water conducting channels may be configured as water conducting troughs. The advantage of the gutter is that it will not be clogged by particles (food residues, scale, etc.) in the water.

It is also an improvement that the at least one water channel is a laterally closed channel. Such a water guide passage may also be referred to as a water guide pipe. In particular, all water conducting channels can be configured as water conducting pipes.

The water inlet joint is especially a tubular joint. The longitudinal axis of the water inlet connection can correspond to the longitudinal axis of the cartridge holder and, if appropriate, to the axis of rotation. The water inlet connection represents an end region of the upper side of the cartridge holder when inserted into the top cover of the cooking chamber.

The cooking appliance is in particular a domestic cooking appliance. The cooking appliance is in particular a steam-treatment appliance, for example a separate steam-treatment cooking appliance or an oven with steam-treatment function, in particular an oven with steam-cooking function.

It is an embodiment that the water distributor has an annular base in which at least one water channel is formed. This makes it possible to provide an easily and simply producible carrier for the at least one water channel. The water channel can therefore also be arranged in a surrounding manner, which enables particularly effective spraying of the cooking chamber.

A further embodiment provides that at least one drain opening is present between the base and the water jet. Through which water and particles can be discharged. The drain opening is particularly so large that detached cold deposits do not block the drain opening, and even at low volumetric flows of water entering through the water inlet connection.

It is also possible to design the outlet opening at least partially as a result of a gap, in particular a vertical annular gap, between the base part and the water spray element. A separate drain opening can thus be dispensed with. The sufficient width of the gap also prevents the rotatability between the base and the water jet, which is present if necessary, from being impaired.

It is still another embodiment that the base has a mounting area for the water spray, which has at least one perforation as part of the water outlet. A reliable mounting of the base on the water spray element practically without play can be achieved by means of this mounting region. In the rotatable design, a particularly low-torsion and therefore rapid rotation is thus also achieved.

For particularly low sliding friction, an annular or ring-sector design of the mounting region ("sliding ring") is advantageous.

In this case, the water jet has a water distribution surface below the water inlet connection, the outer edge of which is higher than the inner end of the at least one water channel. This makes it possible to compensate for the loss of height of the water when crossing the gap, which in turn makes it possible to keep the proportion of water formed by the water channel jet particularly high. The water loss through the gap is kept particularly low.

The water distribution surface has a tip in the middle in the direction of the water channel, which is also a design solution. The water flowing out of the water inlet connection can thus be deflected laterally with low energy loss. The kinetic energy at the outlet of the water intake connection is thus largely preserved and converted into a lateral movement at high speed.

A uniform flow of water around the tip in the circumferential direction can also be achieved, but this is not required. This in turn enables a uniform spray or the like in the circumferential direction of the wall of the water jet cooking chamber and this enables particularly uniform cleaning.

Advantageously, the film of water flowing down along the water distribution surface is relatively flat, for example one to two millimeters. This facilitates a low-loss jump through the gap between them to the base of the water distribution element.

The distribution surface is advantageously smooth in order to avoid energy losses from the water.

In this case, the at least one water channel can have a horizontal or descending course which rises from the inside to the outside relative to a plane perpendicular to the longitudinal axis or the rotational axis. The height of the impact of the associated water jets on the wall of the cooking chamber can thus be set. The course of the water guide channel at its outer edge or the angle of the outgoing water jet at the outer edge relative to the horizontal is characterized by a horizontal inclination angle α. A rising, horizontal or falling trend can be described by α >0, α = 0 °, α < 0.

An arrangement "from the inside to the outside" is to be understood in particular as an arrangement which extends from a position closer to the longitudinal axis or the axis of rotation of the base to a position further away from the axis of rotation. The water channel can in particular start or begin at an inner edge of the base and in particular end at an outer edge of the base. The water guide channel is in particular a straight or curved elongated channel.

In particular, the at least two water conducting channels may have different horizontal inclination angles α. Thus, the cooking chamber or its walls (bottom, side walls and/or top cover) can be cleaned at different heights. The horizontal angle of inclination α of the at least one water channel can be set such that the associated water jet impinges on the top cover of the cooking chamber. The horizontal inclination angle α of the at least one water channel can be set such that the associated water jet impinges on the bottom of the cooking chamber.

In addition, the design is such that the at least one water channel is formed on the upper side on the base, in particular as a gutter which is open on the upper side. Thus, a large part of the wall of the cooking chamber can be cleaned with a high impulse of the impinging water jet.

In addition, it is provided that at least one water channel is formed on the base on the underside, in particular as a gutter open on the underside or as a deflector wall. This achieves that the water jet with a high momentum impinges on the lower region of the side wall of the cooking chamber and also on the bottom of the cooking chamber.

In this case, the fastening ring is preferably designed as a ring-shaped element, which is fastened to the water jet in a locked manner. This applies in particular to the case of a water distributor having an annular base in which the at least one water channel is formed. The advantage of this embodiment is that the water distributor can be fastened to the water spray element simply, in particular by means of a plug-in movement through the water inlet connection of the water spray element. The water inlet connection can have corresponding locking tabs, over which the fastening ring can slide under force and then spring back and hold it in a form-locking manner.

It is also conceivable for the water distributor to be rotatably arranged on the water spray and to be drivable for rotation by water flowing out of the water spray. In this way, during the cleaning operation, the water jet can be moved in the cooking chamber in the circumferential direction, so that a particularly large surface which can also be cleaned mechanically is obtained.

A further development provides that the water distributor is arranged on the water distributor in a fixed or non-rotatable manner. This is particularly simple to produce and robust.

In addition, it is also provided that the at least one connection region is designed to rotate the water distribution element when water is flushed out of the water distribution element. The connection region can be in particular a blade-like connection region and can also be referred to as a "drive blade" when used as a drive element. The use of the driving blade enables a reliable initial movement of the water distributor and a particularly high torque. The drive blades are oriented in particular obliquely to the radial direction. The radial direction or radial direction is in particular perpendicular to the longitudinal axis or axis of rotation of the water distributor. Due to the deviation from the radial direction, the radially discharged water from the water jet may collide with or push the driving blade, thereby exerting a force in the circumferential direction.

In addition, it is also provided that the at least one water channel is designed for rotating the water distributor. Thus, a high torque can likewise be achieved due to the potentially higher number of water ducts. The water channel extends at least in sections obliquely to the radial direction or the radial direction. The angle at the outlet of the water channel with respect to the radial direction may also be referred to in the following without restricting the generality as "radial tilt angle β". The radial tilt angle β advantageously points in the same direction (β >0 or β < 0) for all water conducting channels and, if necessary, the driving vanes. The radial inclination angle β may have the same value for all water conducting channels (β = constant) or different values for at least two water conducting channel assemblies. By the choice of the radial inclination angle β, the rotational speed of the water distribution member or the torque exerted thereon can be set.

In addition, the following is a design in which the cartridge is placed on the fastening region. The cartridge may be placed on the cartridge holder by the user of the cooking apparatus or may already be fastened thereto from the factory. The cartridge can be fastened to the cartridge holder in a removable or non-removable manner. The cartridge may have a disposable with or without a cartridge holder.

The object is also achieved by a method for cleaning a cooking chamber of a cooking appliance, wherein a water inlet connection of a water jet is pressurized with water, the water is deflected by the water jet onto a water distributor attached to the water jet and the water is directed onto at least one wall of the cooking chamber by means of at least one water guide channel present in the water distributor.

This method can be constructed similarly to the cartridge holder and has the same advantages.

The water directed onto the at least one wall of the cooking chamber is shaped in particular as a water jet by the at least one water channel, since this achieves a particularly high mechanical cleaning force.

The above features, characteristics and advantages of the present invention and the manner and method of how they are accomplished will be more clearly and more clearly understood in conjunction with the following schematic description of an embodiment which is explained in more detail in conjunction with the accompanying drawings.

Fig. 1 shows a cooking appliance in the form of a steam cooking oven with a drum support and a washing drum as a sectional view in a side view;

FIG. 2 shows the water spray of the cleaning cartridge and cartridge holder in an oblique view, in the still unassembled state;

FIG. 3 shows the cartridge holder with the water spray and water distribution member in a view from obliquely above;

FIG. 4 shows the cartridge holder in a side view as a sectional view;

fig. 5 shows a cut-out from fig. 4 in the region of the annular gap;

fig. 6 is a view seen from obliquely below showing a water distribution member;

FIG. 7 shows a cut-out of another water distribution member in a view from obliquely above;

FIG. 8 shows a cut-out of the further water distribution piece from FIG. 7 in a top view;

fig. 9 shows another water distribution member in a view from obliquely below; and is

Fig. 10 shows a cross-sectional view of a further water distributor in the region of the water channel.

Fig. 1 shows a cooking appliance in the form of a steam cooking oven 1 with a cooking chamber 2, which cooking chamber 2 can be loaded with cooking food (not shown) by a user. The cooking chamber 2 can be heated in a targeted manner and can be loaded with steam. The cooking chamber 2 has a water collection tray 3 (e.g. a dish-shaped depression) on its bottom 2a, in which water collection tray 3, for example condensed water W, can collect during steam operation. The water collection tray 3 is connected to the suction side of a pump 4, wherein water W located in the water collection tray 3 can be transported by the pump 4 to a water connection 5 in the form of an opening located in the top cover 2b of the cooking chamber 2. In a steam cooking operation, for example, a water nozzle (not shown) can be inserted into the water connection 5 in order to distribute the water W supplied thereto evenly in the cooking chamber 2, so that the water W can evaporate there. Thereby forming a water circulation.

For cleaning the cooking chamber 2, for example for removing food evaporants, in particular grease, which have deposited on the walls and/or for descaling, the water nozzle can be replaced by a cartridge holder 7 provided with a cleaning cartridge 6. Alternatively, in steam operation, for example, steam is generated by a separate steam generator (not shown) and is guided into the cooking chamber 2, and the water circulation is used only for cleaning of the cooking chamber 2.

For cleaning the cooking chamber 2, the cartridge holder 7 is inserted into the water connection piece 5 and is held there detachably, for example by means of a screw connection, a bayonet connection or a locking connection or the like. When the pump 4 is switched on, the cartridge holder 7 is pressurized with water W and dispenses the water W in the cooking chamber 2, as indicated by the dashed arrow.

Furthermore, the cooking chamber 2 is heated, whereby the plate-shaped melting seal S of the cleaning cylinder 6 melts and opens an opening T on the underside, through which opening the cleaning agent (for example for fat dissolution and/or descaling, not shown) located in the cleaning cylinder 6 falls into the water feed collection tray 3. The cleaning agent is dissolved there and then dispensed in the cooking chamber 2 together with the water W. The cartridge holder 7 makes the walls of the cooking chamber 2 (including the top cover 2b and the side wall 2 c) wet with the detergent-applied water W. It is particularly advantageous here when the walls 2a-c are wetted as completely as possible. It is also advantageous if the water W strikes the

walls

2b, 2c and, if appropriate, also 2a with a greater momentum, so that the food residues, oil films, scale deposits, etc. located there are thus also removed mechanically.

After the cleaning process has ended, for example after a few hours, the cleaning cartridge 6 together with the cartridge holder 7 can be removed again and disposed of or set for recycling, for example. The cleaning cartridge 6 together with the cartridge holder 7 may also be referred to as a

cartridge system

6, 7.

Fig. 2 shows the cleaning cartridge 6 of the

cartridge system

6, 7 and the first component ("water jet" 8) of the cartridge holder 7 in an oblique view, still in the unassembled state.

The cleaning cartridge 6 has a receptacle 50 made of plastic filled with a cleaning agent. The opening T of the lower side, which is closed by means of a melting seal S (for example made of wax, not shown) in the heated cooking chamber 2, is covered by a screw cap 10 for protection thereof. Before insertion into the cooking chamber 2, the user removes the screw cap 10.

The cleaning cartridge 6 has fastening regions in the form of bayonet-lock guides or grooves 11 on the upper side in order to connect it reliably detachably (if necessary, but also unreleasably) to the cartridge holder 7. The water spray elements 8 serve to fasten fastening regions 12 on the underside of the cleaning cylinder 6, on which protrusions 13 matching the grooves 11 are present.

The water inlet connector 14, which is located on the upper side when the cover is mounted on the top side, can be screwed into the water connector 5. The water inlet connection 14 is tubular in shape and has a thread 15 on its outer side. When the

cartridge system

6, 7 is inserted, the fastening region 12 together with the cleaning cartridge 6 is then arranged in the cooking chamber 2.

Between the fastening region 12 and the water inlet connection 14, the water jet 8 has an intermediate section 16. The water W flowing under pressure into the water inlet connection 14 flows out again laterally from the central section 16. The middle section 16 thus has at least one laterally open drain opening.

The cartridge system has a longitudinal axis L corresponding to the longitudinal axis of the water inlet fitting 14.

Fig. 3 shows the cartridge holder 7 with the water spray 8 and a second part or partial part, which is referred to below without limiting the generality as "water distributor 9", in a view from obliquely above. The cartridge holder 7 is therefore constructed in two parts as a water spray part 8 and a water distribution part 9. Both

pieces

8, 9 can be made of plastic and manufactured by means of an injection molding process.

The water distribution member 9 is mounted to the water spray member 8 through a water inlet joint 14. Whereby it is arranged on the water jet 8 in a rotatable manner about the longitudinal axis L. The water distributor 9 has for this purpose an annular base 17 which extends in a plane perpendicular to the longitudinal axis L. The base 17 has on its upper side a plurality of water chutes or water channels 18 to 20 which are open at the top and which in this sense run through radially so that they form water guides from an inner edge 29 (see fig. 4) of the annular base 17 to an outer edge thereof. The water channel 18 thus extends from the inside to the outside. The water guide channels 18 to 20 are arranged at least approximately equally spaced apart in the circumferential direction about the longitudinal axis L.

The base 17 is connected to a fastening ring 22 extending parallel thereto via three blade-like connecting regions 21 here, which are distributed symmetrically about the longitudinal axis L. The blade-like connection region 21 projects from the upper side of the base 17, so that the fastening ring 22 is also located above the base 17. The fastening ring 22 is mounted on the water inlet connection 14 and is held thereon in a form-locking manner by means of locking tabs 27. The fastening ring 22 is rotatably supported about the longitudinal axis L between the intermediate piece 16, which is wider than the water inlet fitting 14, and the locking tabs 27. The water distributor 9 rests on the underside on a sliding ring 13 (see fig. 6) which slides on a fastening region 12, which is widened there relative to an intermediate piece 16.

The water spray element 8 is shaped in such a way that it has a water distribution surface 23 below the water inlet connection 14, which deflects the water flowing out of the water inlet connection 14 vertically downwards to the side and is distributed practically or substantially uniformly in the circumferential direction about the longitudinal axis L here. This occurs virtually without energy loss. The water can in particular flow out of the water spray element 8 approximately uniformly in each direction about the longitudinal axis L. This substantially evenly distributed drainage is not available only on the four wall strips 24 connecting the inlet connection 14 to the distribution surface 23. However, the water distribution surface is therefore usually also configured to cause an uneven distribution of water drainage.

The strip 24 is oriented linearly radially toward the longitudinal axis L so that it does not significantly affect the evenly distributed water output. The intermediate section 16 thus has four drainage openings distributed in the circumferential direction, separated from one another by struts 24. This can also be seen in that the central section 16 has a peripheral drain opening with four segments.

The water is thus discharged radially at a relatively high speed or flows out laterally from the outer edge 28 of the water distribution surface 23 (see fig. 4). The water which is discharged impinges on the annular base 17 after passing the annular gap 25. At the annular base 17, the water flows further outward and, thus, flows primarily into the water channels 18 to 20 and, if appropriate, along the blade-shaped connecting regions 21. By determining the shape of the water ducts 18 to 20 and, if appropriate, the blade-like connecting regions 21, the water can be guided in a targeted manner into the cooking chamber 2. The water channels 18 to 20 can thus produce a targeted water jet which locally achieves comparatively particularly good mechanical removal at the

wall

2a, 2b or 2c of the cooking chamber 2.

Furthermore, it is thus possible to spray different heights in the cooking chamber 2 with water better. In this case, the water channels 18 to 20 are shaped in such a way that they allow water flowing through to flow out at different angles of elevation ("horizontal inclination angle α", see fig. 4). When the water guide channel 18 sprays water in a slightly upward orientation (α > 0) so that the water impinges on the side wall 2c in the middle height range, the water guide channel 19 sprays water in an obliquely downward orientation (α < 0) so that the water is guided onto the lower height area of the side wall 2c or onto the bottom 2 a. The water guide passage 20 is oriented steeply obliquely upward (α > 0) to guide water onto an upper height area of the sidewall 2c or onto the top cover 2 b. The water distributor 9 thus has

water ducts

18, 19 and 20 with a rising and falling course from the inside to the outside. However, it is also possible to provide a horizontally extending (α = 0 °) water conducting channel.

There may be a plurality of identically shaped

water ducts

18, 19 or 20, or all water ducts 18 may be configured differently from one another, in order to achieve a particularly large sprayed or blasted surface of the walls 2a to 2c of the cooking chamber 2.

Fig. 4 shows a sectional view of the cartridge holder 7 in a side view. The water W flowing out of the water inlet connection 14 impinges on the water distribution surface 23 (which corresponds to the upper side of the fastening area 12).

The distribution surface 23 has a basic shape symmetrical about the longitudinal axis L, with a centrally directed or upwardly directed tip 26 directed towards the water inlet connection 14. Starting from this tip 26, the water distribution surface 23 is shaped in such a way that it extends in cross section in a downwardly curved manner or away from the water inlet connection 14. Thus, a deflection of the water W from the vertical direction to the lateral, in particular horizontal direction, is achieved with a low energy loss.

The longitudinal distance from the water inlet fitting 14 is thereby increased with increasing distance from the longitudinal axis L. The curved descending region 23a of the water distribution surface 23 can be transferred into a horizontal edge region 23b or even into an edge region which rises up on the side again. Alternatively, the curved descending region 23a extends as far as the outer edge 28. In order to conduct the water W from the outer edge 28 of the water distribution surface 23 as completely as possible to the water channels 18 to 20 via the annular gap 25, the outer edge 28 of the water distribution surface 23 is slightly higher than the inner ends of the water channels 18 to 20. A possible height h of the water W is here indicated by a double arrow and may be, for example, one to two millimeters.

The water W which does not pass over the annular gap 25 or which flows back from the water distributor 9 flows into the annular gap 25, as is also shown by means of the enlarged cut-out in fig. 5. The annular gap 25 is dimensioned so wide that dirt and/or scale particles K of usual size do not clog the annular gap 25 and thereby also do not impede the rotation of the water distribution member 9 relative to the water spray member 8.

The water W and the dirt and/or scale particles K can flow out of the annular gap 25 through the perforations 30 of the slip ring 31 (see also fig. 6). A slide ring 31 is provided on the water spray piece 9 for the sliding support of the water spray piece 9 and is arranged on the underside of the base 17.

The annular gap 25, the perforations 30 and the optionally present further short horizontal annular gap 32 between the base 17 and the fastening region 12 together represent a drain opening.

Fig. 6 shows the water distribution member 9 in a view seen obliquely from below. On the inner edge 17a of the base 17 of the water distributor 9, an annular slide ring 31 projects downward with a plurality of perforations 30 distributed uniformly in the circumferential direction. The diameter of the inner edge 17a is greater than the diameter of the outer edge 22a of the fastening ring 22 to facilitate demoulding of the water distribution member 9.

A variant is that the water distributor 9 does not rotate during the cleaning operation and, for example, also cannot rotate relative to the water spray 8.

A further particularly advantageous variant for completely spraying or spraying the walls 2a to 2c with water is that the water distributor 9 rotates about the water spray 8 during the cleaning operation. The water jets issuing from the water distributor 9 thus also rotate, as a result of which they impinge on a particularly large surface of the cooking chamber 2 or of the walls 2a to 2c and achieve particularly effective cleaning.

For driving the rotatable water distributor 9 into rotation relative to the water spray 8, the water channels 18 to 20 and/or the blade-like connection regions 21 can be angled relative to a straight radially protruding orientation with respect to the longitudinal axis L. The water W thus flowing into or impinging on it exerts a force in the circumferential direction during its directional deflection on the base 17, which subsequently rotates. The blade-like connection region 21 thus serves as a driving blade and the water guide channels 18 to 20 serve as water deflection channels.

Fig. 7 shows a cut-out of another water distribution member 41 in a view from obliquely upward. Fig. 8 shows a further cutout of the water distributor 41 in a plan view.

The water distributor 41 differs from the water distributor 9 in that the

water guide channels

42, 43 and 44 and the blade-like connecting regions 45 on the upper side of the base 48 are shown inclined with respect to the linear radial orientation. The angle at the outlet of the

water guide channels

42, 43 and 44 with respect to the radial direction (shown in dash-dot lines) is hereinafter referred to without limiting the generality as "radial tilt angle" beta. The radial inclination angle β points in the same direction (β > 0) for all

water ducts

42, 43 and 44 and, if appropriate, for the blade-shaped connecting region 45. The radial inclination angle β can have the same value (β = constant) for all

water ducts

42, 43, 44 and, if appropriate, the blade-like connecting region 45 or different values for at least two of these components.

This radially inclined course (β > 0) causes an impulse to be transmitted in the circumferential direction from the water W to the water distributor 41, which impulse generates a torque on the water distributor 41. A rotation of the water distribution piece 41 is thereby obtained, and namely in the counterclockwise direction in the top view shown.

The

water guide passages

42, 43 and 44 have different horizontal inclination angles α similarly to the water guide passages 18 to 20. That is, the water guide passage 42 extends slightly upward from the inside to the outside, and the water guide passage 43 extends horizontally (α = 0 °) and the water guide passage 44 sharply and curvedly upward. As fig. 9 shows in a view from obliquely downward, the water distributor 41 also has two water guide channels 46, in particular obliquely to the radial direction, which open downward and thus guide or deflect the water on the upper side. A particularly strong and targeted water jet can be directed through the water channel 46 into the lower region of the side wall 2c and onto the bottom 2a of the cooking chamber 2 (α < 0). Furthermore, there may also be at least one water channel 47 which is open at the top and which, however, descends from the inside to the outside (α < 0).

Fig. 7 and 9 show the slip ring 31 without the perforations 30.

Fig. 10 depicts a sketch of a cross-sectional view of the water distributor 41 in the region of the water channel 46. The possible step on the upper side of the ring 48 is formed obliquely at a forming bevel to simplify the demolding of the water distributor 41, as is shown here by means of a correspondingly oblique drainage opening 49.

Of course, the invention is not limited to the embodiments shown.

In general, the cartridge holder can also be inserted only vertically into the top cover of the cooking chamber, but also, for example, at an angle thereto, in particular at an angle of 90 °, or horizontally. In this case, the positional specifications used above, such as "upper side", "lower side", etc., can be matched accordingly.

In general, reference to "a", "an", etc., is intended to mean one or more, particularly in the sense of "at least one" or "one or more", unless expressly excluded, for example by the expression "exactly one", etc.

In addition, a numerical statement may include exactly the number explicitly given and a normal range of tolerances, unless such numerical statement is explicitly excluded.

List of reference numerals

1 steam cooking stove

2 cooking chamber

2a bottom of cooking chamber

2b Top cover of cooking Chamber

2c side wall of cooking chamber

3 Water collecting tray

4 pump

5 Water joint

6 cleaning cylinder

7-cylinder bracket

8 water spraying piece

9 Water distribution piece

10 screw cap

11 groove of bayonet lock

12 fastening area

13 projection of bayonet lock

14 water inlet joint

15 screw thread

16 intermediate member

17 base part

17a edge of the inner portion of the base

18 water guide channel

19 Water guide channel

20 water guide channel

21 connection region

22 fastening ring

22a fastening ring

23 water distribution surface

23a with curved descending area of the water surface

23b horizontal area of water distribution surface

24 support plate

25 annular gap

26 tip part

27 locking tab

28 outer edge of water distribution surface

29 edge of the inner side of the base

30 perforation

31 slip ring

32 horizontal ring gap

41 Water distribution piece

42 water guide channel

43 Water guide channel

44 water guide channel

45 connection region

46 water guide channel

47 water guide channel

48 base

49 drainage port

50 container

h height of water above water level

K-scale and/or scale particles

L longitudinal axis

S melt seal

Opening of T-shaped cleaning cylinder

W water.

Claims

1. Cooking appliance (1) having a cooking chamber (2) and a water connection (5) on the cooking chamber side, having a cartridge holder (7) with a water jet (8) having a water jet

-an upper side water inlet connection (14) connectable to the water connection (5), and

-having a fastening area (12) for a cartridge (6) to be arranged in the cooking chamber (2),

characterized in that the cartridge holder (7) additionally has a water distributor (9; 41) with at least one radially extending water channel (18-20; 42-44, 46, 47) for the water (W) flowing out of the water spray (8).

2. Cooking apparatus (1) according to claim 1,

-wherein the water distribution piece (9; 41) has an annular base (17; 48) in which the at least one water channel (18-20; 42-44, 46, 47) is formed and

-wherein at least one drainage opening is present between the base (17; 48) and the sprinkler (8).

3. Cooking apparatus (1) according to claim 2, wherein the drain opening is at least partially formed by a gap (25) between the base (17; 48) and the water jet (8).

4. A cooking apparatus (1) according to claim 2 or 3, wherein the base (17; 48) has a mounting area with the water jet (8) having at least one perforation (30) as part of the water discharge opening.

5. Cooking apparatus (1) according to any of the previous claims 1 to 3, wherein the water jet (8) has a water distribution surface (23) below the water inlet joint (14), the edge (28) of the outer side of the water distribution surface being higher than the end of the inner side of at least one water guiding channel (18-20; 42-44, 46).

6. Cooking apparatus (1) according to claim 5, wherein the water distribution surface (23) has a tip (26) in the centre towards the water inlet connection (14).

7. Cooking apparatus (1) according to any of the preceding claims 1 to 3, wherein at least one water channel (18-20; 42-44, 46, 47) has a rising or horizontal or falling course from the inside to the outside.

8. Cooking apparatus (1) according to claim 2 or 3, wherein at least one water channel (18-20; 42-44, 47) is configured on the base (17; 48) on the upper side.

9. Cooking device (1) according to claim 2 or 3, wherein at least one water channel (46) is configured on the base (48) on the underside.

10. Cooking apparatus (1) according to any one of the preceding claims 1 to 3,

-wherein the water distribution member (9; 41) has an annular base (17; 48) in which the at least one water conducting channel (18-20; 42-44, 46, 47) is configured,

-wherein the base (17, 48) is connected via at least one connecting region (21) and a fastening ring (22) extending parallel thereto, and

-wherein the fastening ring (22) is lockingly fastened on the water jet (8).

11. Cooking apparatus (1) according to any one of the preceding claims 1 to 3, wherein:

-a water distribution member (9; 41) is rotatably arranged on the water spray member (8) and

-drivable for rotation by means of water (W) flowing out of the water jet (8).

12. Cooking apparatus (1) according to claim 10, wherein:

-said at least one connection area (21) is configured for rotating said water distribution member (9; 41) when water (W) is flushed out by said water spray member (8).

13. Cooking apparatus (1) according to claim 9, wherein at least one water channel (18-20; 42-44, 46, 47) is configured for rotating the water distribution member (9; 41).

14. Cooking apparatus (1) according to any of the preceding claims 1 to 3, wherein a cartridge (6) is placed on the fastening area (12).

15. Method for cleaning a cooking chamber (2) of a cooking apparatus (1) according to any of the preceding claims, wherein

-pressure loading the water inlet connection (14) of the water jet (8) with water (W),

-water is deflected by means of the water jet (8) onto a water distribution member (9; 41) mounted to the water jet (8), and

-water (W) is directed onto at least one wall (2 a, 2b, 2 c) of the cooking chamber (2) by means of at least one water conducting channel (18, 20, 42-44, 46, 47) present in the water distribution member (9; 41).